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miss Akunina [59]
3 years ago
6

How many valence electrons would an element with atomic number 113 have?

Chemistry
1 answer:
marshall27 [118]3 years ago
4 0

How does the law of conservation of mass apply  to this reaction: C2H4 + O2 → H2O + CO2?

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What is the [H+] of a solution with a pH of 9.40?
LiRa [457]

Answer:

a) 3.98 x 10^-10

Explanation:

Hello,

In this case, for the given pH, we can compute the concentration of hydronium by using the following formula:

pH=-log([H^+])

Hence, solving for the concentration of hydronium:

[H^+]=10^{-pH}=10^{-9.40}\\

[H^+]=3.98x10^{-10}M

Therefore, answer is a) 3.98 x 10^-10

Best regards.

4 0
3 years ago
To make 2.00 L of 0.300 M sulfuric acid, how many mL of a 1.00 M stock solution should be used?
Tamiku [17]
We are given with
M1 = 1.00 M

M2 = 0.300 M
V2 = 2.00 L

We are asked to get V1

Using material balance
M1 V1 = M2 V2
Substituting the given values
1.00 V1 = 0.300 M (2.00 L)
V1 = 0.600 L or 600 mL
THe volume needed is 600 mL<span />
3 0
3 years ago
Explain what is respiration in your own words..
nadezda [96]

Answer:

Plants using glucose to make ATP molecules during the process of photosynthesis which results in the plant releasing oxygen.

This is cellular respiration. ↑

8 0
2 years ago
Select a system in the human body and explain how a breakdown in the digestive system might affect the system you just chose.\
Citrus2011 [14]
The circulatory system works with the digestive system. Once the food is digested, the circulatory systems absorb and uses the nutrients in the food. If the digestive system were to break down, the circulatory will not have the nutrients it needs to sufficiently run the body. 
6 0
3 years ago
How many molecules are in 13 moles of oxygen?
natima [27]

Answer:

mass/13of molecules .........

8 0
2 years ago
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